Roger Federer makes his return to the tennis tour in 2017 after being sidelined since July. He ended his season early to rehab a knee injury.
He -- and his numerous fans -- hope the 17-time grand slam winner has one more grand slam title left in him.
Another huge name in the sport, Maria Sharapova, makes her comeback at the end of April.
Sharapova wasn't injured. Rather, the Russian five-time grand slam winner is serving a drug suspension.
Yet another player to make a comeback is Nick Kyrgios. The reason he was out? The Australian was banned for eight weeks by the ATP tour in October for, essentially, a lack of effort.
In grand slams, he'll make his return in time for the Australian Open, Kyrgios' home major in Melbourne.
Will Serena Williams surpass Steffi Graf and become the first player in the Open Era to win 23 majors?
Williams -- yes -- is also coming back. The 35-year-old hasn't played since September because of a shoulder injury.